Aha, so a fat first stage motor on the D (
through G, apperently), got it!
Also I think I ran across photo of a Scout on a launcher that was even more minimalist, where some of the supports were just straps, maybe. Can't find it now, though it would be interesting to model.
I imagine you've seen, in the Smithsonian's collection there's an Estes scale Scout
model rocket as well as a static Scout
model with launch tower, a heavy-duty version of the tower. In addition to their
real Scout on display, of course!
By the way, someone was working on a 1/11.4 scale Scout D multi-stage
flying model rocket.